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3M™ DBI-SALA® Smart Lock Edge (with modular connector) 30 ft., Self Retracting Lifeline, Galvanized Cable, ANSI Class 2 - 3503890

Class 2 certified to the new ANSI/ASSP Z359.14-2021 standard, the 3M™ DBI-SALA® Smart Lock Edge, with modular connector, is a revolutionary SRL that detects differences between a fall and normal work motion. This Smart Lock Edge-Modular 3503850 SRL has a galvanized cable lifeline that extends to a length of 30 feet (10 m). From decreasing lockups to simplifying inspections, the new Smart Lock SRL ensures safety and convenience when working at height.

SKU: 3503890

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A smarter SRL knows the difference between a fall and normal work motion

The 3M™ DBI-SALA® Smart Lock Self-Retracting Lifeline are the smartest SRLs yet. Every feature of the new Smart Lock SRL is designed to help employees perform safely and conveniently, from decreasing nuisance lockups to streamlining inspections.

Using advanced motion capture technology, 3M investigated the forces exerted on the SRL during common tasks performed at height. Using this information, they were able to design a new arrest mechanism that can distinguish between a fall and normal work motions more readily, customizing an SRL for your work application.

These features are key safety improvements and provide the user with the comfort and support required to get the job done right.

Product Highlights

  • Lightweight thermoplastic housing with built in carrying handle
  • Swiveling anchorage point and carabiner included
  • Patent pending dual label system simplifies inspections and reduces the need for replacement
  • Swiveling snap hook with impact indicator
  • RFID located in cable handle

3M™ DBI-SALA® Smart Lock Edge (with modular connector) 30 ft., Self Retracting Lifeline, Galvanized Cable, ANSI Class 2 - 3503890 Specifications *( 1,2 )

Model Number:
Product Series:
Smart Lock™
Product Category:
Cable & Rope SRLs, Mounted SRL, Single-Leg SRL
Length Option:
30 ft.
Anchor Connection Type
Anchor Hook Material
Zinc Plated Steel
ANSI Class Level
Class 2
Carabiner/Hook Material
Zinc Plated Steel
Color Family
For Use With
Full Body Harness & Anchor Point
Harness Connection Hook Material
Non Pertinent
Harness Connection Type
Non Pertinent
Housing Material
Nylon Thermoplastic
Housing Type
Install Type
Portable & Removable
Leg Count
Lifeline Hook Material
Zinc Plated Steel
Lifeline Length (Imperial)
30.0 ft
Lifeline Length (Metric)
9.1 m
Lifeline Material
Galvanized Cable
Maximum Number of Users
Mounting Type
Block to Anchor Point
Net Weight (Imperial)
18.3 lb
Net Weight (Metric)
8.3 kg
Overall Length (Imperial)
30.0 ft
Overall Length (Metric)
9.1 m
Product Color
Product Number
Product Series
Smart Lock
Specifications Met
ANSI/ASSP Z359.14-2021, 29 CFR OSHA 1910.140, 29 CFR OSHA 1926.502
Single Leg
Weight Capacity (Imperial)
420.0 lb.
Weight Capacity (Metric)
190.0 kg
Product Weight:
0 lbs.

Product Specification Disclaimer *( 1, 2 )

*1. Manufacturer's specifications are supplied by the manufacturer and are subject to change without notice. The data and information contained in these specification sheets are representative; the ratings supplied are suggested as guidelines and should only be used for evaluating your specific application.

**2. Although Reliable Electric Products Company Inc. has made every effort to ensure the accuracy of information by third parties, it is ultimately the customer’s responsibility to validate these specifications to ensure they are suitable for SAFE use in a particular application. Reliable Electric Products Company Inc. disclaims to the extent permitted by law, any warranty or liability.

Manufacturer's Extended Intended Use Disclaimer

3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use. Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice. Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage. For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.

3M™ DBI-SALA® Smart-Lock® Self-Retracting Devices - User Instructions

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3M™ Personal Safety Products - Firefighting Notice

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